GMT to UTC to KST to PDT
Time Difference
Greenwich Mean Time is 0 hours ahead of Universal Time Coordinated and 9 hours behind Korea Standard Time and 7 hours ahead of Pacific Daylight Time
6:30 pm18:30 in GMT is 6:30 pm18:30 in UTC and is 3:30 am03:30 in KST and is 11:30 am11:30 in PDT
GMT to UTC call time
Best time for a conference call or a meeting is between 8am-6pm in GMT which corresponds to 8am-6pm in UTC
GMT to KST call time
Best time for a conference call or a meeting is between 8am-10am in GMT which corresponds to 5pm-7pm in KST
GMT to PDT call time
Best time for a conference call or a meeting is between 3pm-6pm in GMT which corresponds to 8am-11am in PDT
6:30 pm18:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
6:30 pm18:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
3:30 am03:30 Korea Standard Time (KST). Offset UTC +9:00 hours
11:30 am11:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
6:30 pm18:30 GMT / 6:30 pm18:30 UTC / 3:30 am03:30 KST / 11:30 am11:30 PDT
| GMT | UTC | KST | PDT |
|---|---|---|---|
| 12am (midnight) | 12am (midnight) | 9am | 5pm |
| 1am | 1am | 10am | 6pm |
| 2am | 2am | 11am | 7pm |
| 3am | 3am | 12pm (noon) | 8pm |
| 4am | 4am | 1pm | 9pm |
| 5am | 5am | 2pm | 10pm |
| 6am | 6am | 3pm | 11pm |
| 7am | 7am | 4pm | 12am (midnight) |
| 8am | 8am | 5pm | 1am |
| 9am | 9am | 6pm | 2am |
| 10am | 10am | 7pm | 3am |
| 11am | 11am | 8pm | 4am |
| 12pm (noon) | 12pm (noon) | 9pm | 5am |
| 1pm | 1pm | 10pm | 6am |
| 2pm | 2pm | 11pm | 7am |
| 3pm | 3pm | 12am (midnight) | 8am |
| 4pm | 4pm | 1am | 9am |
| 5pm | 5pm | 2am | 10am |
| 6pm | 6pm | 3am | 11am |
| 7pm | 7pm | 4am | 12pm (noon) |
| 8pm | 8pm | 5am | 1pm |
| 9pm | 9pm | 6am | 2pm |
| 10pm | 10pm | 7am | 3pm |
| 11pm | 11pm | 8am | 4pm |
| 0:00 | 0:00 | 9:00 | 17:00 |
| 1:00 | 1:00 | 10:00 | 18:00 |
| 2:00 | 2:00 | 11:00 | 19:00 |
| 3:00 | 3:00 | 12:00 | 20:00 |
| 4:00 | 4:00 | 13:00 | 21:00 |
| 5:00 | 5:00 | 14:00 | 22:00 |
| 6:00 | 6:00 | 15:00 | 23:00 |
| 7:00 | 7:00 | 16:00 | 0:00 |
| 8:00 | 8:00 | 17:00 | 1:00 |
| 9:00 | 9:00 | 18:00 | 2:00 |
| 10:00 | 10:00 | 19:00 | 3:00 |
| 11:00 | 11:00 | 20:00 | 4:00 |
| 12:00 | 12:00 | 21:00 | 5:00 |
| 13:00 | 13:00 | 22:00 | 6:00 |
| 14:00 | 14:00 | 23:00 | 7:00 |
| 15:00 | 15:00 | 0:00 | 8:00 |
| 16:00 | 16:00 | 1:00 | 9:00 |
| 17:00 | 17:00 | 2:00 | 10:00 |
| 18:00 | 18:00 | 3:00 | 11:00 |
| 19:00 | 19:00 | 4:00 | 12:00 |
| 20:00 | 20:00 | 5:00 | 13:00 |
| 21:00 | 21:00 | 6:00 | 14:00 |
| 22:00 | 22:00 | 7:00 | 15:00 |
| 23:00 | 23:00 | 8:00 | 16:00 |
Greenwich Mean Time
Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo
Principal Cities: The largest city in the GMT timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Abidjan, Dakar, Grand Dakar, Accra
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.
GMT representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
- Zulu - Military abbreviation for GMT
- Z - short form of 'Zulu'
- Africa/Abidjan
- Africa/Accra
- Africa/Bamako
- Africa/Banjul
- Africa/Bissau
- Africa/Conakry
- Africa/Dakar
- Africa/Freetown
- Africa/Lome
- Africa/Monrovia
- Africa/Nouakchott
- Africa/Ouagadougou
- Africa/Sao_Tome
- Africa/Timbuktu
- America/Danmarkshavn
- Atlantic/Reykjavik
- Atlantic/St_Helena
- Eire
- Etc/GMT
- Etc/GMT+0
- Etc/GMT-0
- Etc/GMT0
- Etc/Greenwich
- Europe/Belfast
- Europe/Dublin
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- GMT
- GMT+0
- GMT-0
- GMT0
- Greenwich
- Iceland
- Greenwich Mean Time - UTC +0
- GMT+03:00 - UTC +3
- GMT - UTC +1
- GMT-01:00 - UTC -1
- GMT+11:00 - UTC +11
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Universal Time Coordinated
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone
Universal Time Coordinated
Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal
Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.
UTC representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
- Zulu - Military abbreviation for UTC
- Z - short form of 'Zulu'
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- UCT
- UTC
- Universal
- Zulu
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Universal Time Coordinated
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone
Korea Standard Time
Offset: KST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Korea (North), Korea (South)
Principal Cities: The largest city in the KST timezone is Seoul from South Korea with population about 10.349 million people. Other major cities in the area are Busan, Pyongyang, Incheon, Daegu
Daylight Saving: Korea Standard Time (KST) is not adjusted for daylight saving therefore KST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Korea Standard Time remains the same
KST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine hour and zero minutes time differences to the east of the zero meridian.
- India - Military abbreviation for KST
- I - short form of 'India'
- Asia/Pyongyang
- Asia/Seoul
- ROK
- Korea Standard Time - UTC +9
- Pyongyang Time - UTC +8:30
- Krasnoyarsk Standard Time - UTC +6
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time
Pacific Daylight Time
Offset: PDT is 7 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Canada, Mexico, United States
Principal Cities: The largest city in the PDT timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose
French: HAP - Heure Avancée du Pacifique
Spanish: PT - Zona Noroeste
Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Pacific Standard Time (PST).
Start: Pacific Daylight Time (PDT) started on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am. Daylight saving starts annually the on second Sunday of March
End: Pacific Daylight Time (PDT) ends on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November
PDT representations, usage and related time zones
- -07 - basic short
- -0700 - basic
- -07:00 - extended
- -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates seven hour and zero minutes time differences to the west of the zero meridian.
- Tango - Military abbreviation for PDT
- T - short form of 'Tango'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango Time Zone